Comparison of surgical castration at birth versus immunocastration on behavioural response and blood parameters (testosterone and cortisol) in Holstein fattening bulls

Authors

  • Cristina Pérez Linares Instituto de Investigaciones en Ciencias Veterinarias, Universidad Autónoma de Baja California
  • Jorge Armando Cervantes Cazares Instituto de Investigaciones en Ciencias Veterinarias, Universidad Autónoma de Baja California
  • Fernando Figueroa Saavedra Instituto de Investigaciones en Ciencias Veterinarias, Universidad Autónoma de Baja California
  • Alma Rossana Tamayo Sosa Instituto de Investigaciones en Ciencias Veterinarias, Universidad Autónoma de Baja California
  • Alberto Barreras Serrano Instituto de Investigaciones en Ciencias Veterinarias, Universidad Autónoma de Baja California
  • Issa Carolina García Reynoso Instituto de Investigaciones en Ciencias Veterinarias, Universidad Autónoma de Baja California
  • José Leonardo Bolado Sarabia Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Sinaloa
  • Francisco Gerardo Ríos Rincón Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Sinaloa
  • Luis Antonio García Vega Ganadera Mexicali S.A. de C.V

DOI:

https://doi.org/10.15381/rivep.v31i4.17361

Keywords:

bopriva, castrated bulls, hormone, fattening

Abstract

The behavioural response and blood parameters were compared in immunocastrated and surgically castrated bovine males. In total, 720 Holstein males, 7-8 months old and approximately 240 kg body weight were used. One group was immunocastrated by vaccination with Bopriva (commercial anti-GnRH vaccine) on days 1, 21, 101 and 181 days of the fattening and the other group was surgically castrated at birth. Blood samples were taken on vaccination days for testosterone determination and on days 181 and during slaughtering to analyse blood cortisol. Sexual behaviour (mounts and flehmen signs) and aggressive (threats and head butting) and social behaviour (sniffing, grooming, lowered head, and vocalization) were evaluated, finding no significant differences between treatments. Testosterone concentration in both treatments was below 1 ng/ml in all samples. Cortisol levels on day 181 of fattening were lower (p<0.05) with respect to the day of slaughtering in both treatments. Slaughter weight (242 days fattening) was 595.0 kg in immunocastrated males and 620.74 kg in surgically castrated males.

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Published

2020-11-24

Issue

Vol. 31 No. 4 (2020)

Section

Artículos Primarios

License

Copyright (c) 2020 Cristina Pérez Linares, Jorge Armando Cervantes Cazares, Fernando Figueroa Saavedra, Alma Rossana Tamayo Sosa, Alberto Barreras Serrano, Issa Carolina García Reynoso, José Leonardo Bolado Sarabia, Francisco Gerardo Ríos Rincón, Luis Antonio García Vega

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How to Cite

Pérez Linares, C., Cervantes Cazares, J. A., Figueroa Saavedra, F., Tamayo Sosa, A. R., Barreras Serrano, A., García Reynoso, I. C., Bolado Sarabia, J. L., Ríos Rincón, F. G., & García Vega, L. A. (2020). Comparison of surgical castration at birth versus immunocastration on behavioural response and blood parameters (testosterone and cortisol) in Holstein fattening bulls. Revista De Investigaciones Veterinarias Del Perú, 31(4), e17361. https://doi.org/10.15381/rivep.v31i4.17361